(aug 2009, ~30k miles on bike)
back and forth 32 miles each way on 101. reserve light came on once at 151 miles and once at 156 miles.
161.1 miles took 3.63 gallons, or 44.3mpg.
that makes reserve at 156mi = 3.5 gallons.
most online info says it has a 4.76gal tank, which would mean when the reserve light comes on at 3.5 gallons, there are 1.26 gallons left, or 55.6 miles before empty, for a total range of 4.76*44.3=210.8 miles to empty.